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Lee said the contouring is for "a slimmer and graceful looking neck for updos."

"For everyday use, adding just a line of white will automatically and naturally make your neck look slimmer," Lee said in a separate YouTube tutorial. "For pictures, you'll want to add a dark line next to it."

Skip to about 6:34 in the video below for more details on how to apply this trend.

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Rep. Marjorie Taylor Greene, R-Ga., arrives to a news conference on the Epstein Files Transparency Act, Tuesday, Nov. 18, 2025, outside the U.S. Capitol in Washington. (Julia Demaree Nikhinson/AP)

Credit: Julia Demaree Nikhinson/AP